Paper-cutter



(No Model.) v 2 Sheetsv-Sheet l.

J. M. JONES. v PAPPP GUTTPP.- No. 528,599. l Patented Nov. 9.91994.

mmm 'il (No Model.) J M JONES 2 sheets-sheen 2.

PAPER GUTTER.

No. 528,599.l Patented Nov. 6', 1894.

UNITED STATES PATENT l OFFICE.

JOHN M. JONES, OF PALMYRA, NEV YORK.

PAPER-CUTTER.

SPECIFICATION forming part of Letters Patent No. 528,599, dated November 6,1894.

Application led N ovemher 27, 1893. Serial No. 492.146- No model.)

To all whom it may concern:

Be it known that I, JOHN M. JONES, a citizen of the United States, residing` at Palmyra, in the county of Wayne and State of New York, have invented certain new and useful Im.- provements in Paper-Cutters, of which the following is a specification.

My invention relates to paper-cutters, and

has reference more particularly to a novel means for indicating the position or adjustment of the paper gage.

In the drawings,-Figure1 is a perspective view of my improved cutter; Fig. 2,` a vertical sectional view, from front to rear, of the upper part ofthe cutter; and Fig. 3, a sectional view on the line 3 3 of Fig. 2.

A indicates the main frame of the machine having the usual bed or table B, and the uprights C O, which latter are connected by and support the top D. Projecting upward from the table or from the side of frame A, parallel with the uprights C C, are the standards E E which are set away from the front faces of the uprights to afford a space for the knife or cutter F, as shown in Figs. l and 2. The opposing parallel faces of the uprights and standards are inished off nicely to afford suitable guides or guiding surfaces for the bar that carries the knife; the said cutter bar or knife bar being supported and actuated by links G and H as usual.

It will be noticed upon reference to Figs. l and 2 that the standards E have no connection with the uprights C or top D, and hence the knife and its bar may be readily removed or placed in position without affecting the top piece or its uprights.

Table B is provided with a longitudinal slot or opening I, into which projects a lug J formed on the under side of the back gage K, as shown in Fig. 2. In order to actuate this gage, that is, move it longitudinally of the table, I employ an endless sprocket chain L which is secured to the back gage at Z and passes about the sprocket wheels M and N. Wheel M is carried in a yoke or frame O which is supported in the main frame A at the back of the machine, and which is ren-` dered adjustable by means of a screw P as shown in Fig. 2, to take up the slack and wear in the chain. Wheel N at the front of the machine is carried at the inner end of the shaft Q suitablyjournaled in the main frame and provided outside the said frame with a hand wheel R by means of which the shaft and its sprocket wheel may be turned. From this description it is obvious that by turning the hand wheel R, the back gage will be caused to move backward or forward according to the direction in which the wheel is turned.

It is necessary to prevent accidental movement gf the back gage after it has been adjusted, and this is attained by providing a locking device. Shown in Figs. 2 and 3. Pivoted to the under side-of the table, near the front edge, is a block or yoke S in which is pivoted, at the lower end, a shoe T, which latter, when pressed toward the wheel N by means of a hand screw U journaled in the main frame, is caused to bearlagainst the chain L where it passes about the wheel N. The pressure exerted by the screw upon the yoke or block is suicient to cause the shoe to bind the chain firmly against the sprocket wheel and thereby prevent any movement of said wheel and chain or of the back gage.

In order that the position or adjustment of the back-gage may be determined by the operator, at the front of the machine, I provide a graduated bar or rod V (which is divided into inches and fractions of an inch) and mount upon said bar av slide or index W which is connected with the back gage by the bars or rods X and Y,-the said slide or index W having a movement upon the bar V corresponding exactly with that of the backgage.

By means of the slide W and the graduations upon the bar V, the operator can read at a glance the distance the back-gage is from the knife.

The bar Vis grooved along two of its edges as shown at V in Fig. 1, and the edges of the slide or index are bentover and it within said grooves, thus preventing the index from being displaced during its travel back and forth upon the rod or bar.

The rod or barV is supported, preferably, by means of'an arm or bracket Z projecting from the top piece D.

Having thus described my invention, what I claim is- IOO l. In a paper cutter, the combination With having graduations,-and a slide or indeXW the table; of a back-gage mounted thereon; mounted upon the bar and connected with means beneath the table for moving the backthe backgage,-the said graduated bar ex- I 5 gage; a fixed bar V provided with graduatending toward the front of the machine so 5 tions and also grooved longitudinally; aslide as to be always in View.

or index W having its edges seated in the In Witness whereof I hereunto set my hand grooves; and a connection between the backn the presence of two Witnesses. gage and the index. Y

2. In a paper cutter, the combination with JOHN M' JONES ro the frame and table; of a backgage and Witnesses:

means for actuating the same; a bar V sup- I-I. I. KNOWLES, ported from the frame above the table and MEWZO DAVIS. 

